A-A-549 Cushioning Material, Packaging (Flexible Closed Cell Plastic Film, For Short Distribution Cycles)

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A-A-549D

Table I

Nominal cushioning thickness	Cell height
Very thin	Up to 3.18 mm (1/8�)
Thin	3.18 to 6.4 mm (1/8� to 1/4�)
Medium	6.4 to 9.53 mm (1/4� to 3/8�)
Thick	Greater than 9.53 mm (3/8�)

C. Workmanship. The cushioning material shall be free from cracks, cuts, holes, chafed spots, or other imperfections which might impair its usefulness. It shall be free from dirt, contamination, mold release compounds, or other foreign matter. Rolls and perforated rolls shall be evenly wound. Sheets shall be evenly stacked.

3. QUALITY ASSURANCE:

A. Sampling for Examination and Testing. Cushioning material and shipping containers shall be sampled in accordance with MIL-STD-105. A lot shall consist of all cushioning material manufactured by the same process from the same components at the same time, or all fully prepared shipping containers presented for inspection at the same time, as applicable. Unless otherwise specified, every lot shall be tested.

B. Examination of the end item for dimensions and workmanship.

Lot size shall be expressed in units of rolls, perforated rolls, or sheets of cushioning material, as applicable. The sample unit shall be 1 roll, 1 perforated roll, or 1 sheet. The inspection level shall be S-2 and the AQL shall be 2.5 percent defective.

C. Testing. Lot size shall be expressed in units of square feet of cushioning material. The sample unit shall be 0.65 m² (7 ft²) of cushioning material. The inspection level shall be S-1 and the AQL shall be 2.5 percent defective.

(1). Heat Sealability Test. One specimen from each sample unit shall be tested for heat sealability in accordance with Method 2024 of FED-STD-101. The procedure for sheet materials shall be used and the specimen shall be folded before sealing so that the cells are inside. If the seams opens more than 1.58 mm (1/16�), the specimen fails the heat sealability test.